I have a cannondigital IXUS 70 with a communication error

Try NOT connecting your camera to your computer.

The best way to transfer pictures from your camera to your computer involves removing the memory card from the camera and plugging it into a card reader (either built-in to the computer or connected via USB). This is likely to be faster than connecting the camera to the computer, and won't run down your camera's batteries.

Once the card is plugged in, it will appear to your computer as a removable drive. You can use the operating system's drag&drop facility to copy pictures from the card to the computer's hard drive, the same way you copy any other files. Or you can use any photo management program such as Picasa.
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Consider NOT connecting your camera to your computer.
The best way to download pictures from your camera to your computer involves removing the memory card from the camera and plugging it into a card reader (either built-in to the computer or connected via USB or FireWire). This is likely to be faster than connecting the camera to the computer, and won't run down your camera's batteries.

Once the card is plugged in, it will appear to your computer as a removable drive. You can use the operating system's drag&drop facility to copy pictures from the card to the computer's hard drive, the same way you copy any other files. Or you can use any photo cataloging program, such as Picasa.

Have you considered NOT connecting your camera to your computer?

The best way to download pictures from your camera to your computer involves removing the memory card from the camera and plugging it into a card reader (either built-in to the computer or connected via USB or FireWire). This is likely to be faster than connecting the camera to the computer, and won't run down your camera's batteries.

Once the card is plugged in, it will appear to your computer as a removable drive. You can use the operating system's drag&drop facility to copy pictures from the card to the computer's hard drive. Or you can use any photo cataloging program.

http://www.usa.canon.com/cusa/support/consumer/digital_cameras/powershot_sd_series/powershot_sd780_is#ServiceAndSupport

Troubleshooting the camera displaying Communication Error when connected to the computer via USB. If the camera displays "Communication Error," when trying to download images the main cause for this error is that there are more than 1000 images stored on the memory card. It is recommended if there are more than 1000 images on the memory card, that you use a card reader to acquire the images, or to delete images off of the memory so that there are less than 1000 images to download from the memory card.
If this is not the case, there are not 1000 or more images on the memory card, try reconnecting the camera to abnother port on the computer, try another cable or another computer. This error can also display when connecting to a direct print printer. Please check with the printer manufacturer for more information on this error.

Having gone over a month with no response, I assume this is no longer a problem.

Try using a separate card reader.

The SD1000 is also known as Digital IXUS 70. If it is showing "Canon IXU DIGITAL 10", it could be because of character limit in the field.

Try deleting a few hundred pics....I had about 3039...deleted about 200, and now the error went away, able to upload pics from the camera to computer.....possibly 3000 is the maximum number of pics the Camera Window software will allow ?

I had the same problem. My problem was that there were more than 1,000 images stored on the memory card. Once I deleted some of the images from the camera memory card, I was able to download pictures again.

maybe u have 2 delete some photos or movies